The 33 crisis card has three steps:
1. Activate raiders
2. Setup a number of ships.
3. Keep this card in play. Discard and reshuffle in the deck when a basestar or a civilian ship is destroyed.
The third step is what gets me confused. Do you repeat steps 1 and 2 each turn until a basestar/civilian ship is desroyed? Or do you only activate the raiders each turn until a basestar/civilian ship is destroyed? Or does this card work some other way?